1
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Coll RP, Bright SJ, Martinus DKJ, Georgiou DK, Sawakuchi GO, Manning HC. Alpha Particle-Emitting Radiopharmaceuticals as Cancer Therapy: Biological Basis, Current Status, and Future Outlook for Therapeutics Discovery. Mol Imaging Biol 2023; 25:991-1019. [PMID: 37845582 DOI: 10.1007/s11307-023-01857-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/03/2023] [Accepted: 09/05/2023] [Indexed: 10/18/2023]
Abstract
Critical advances in radionuclide therapy have led to encouraging new options for cancer treatment through the pairing of clinically useful radiation-emitting radionuclides and innovative pharmaceutical discovery. Of the various subatomic particles used in therapeutic radiopharmaceuticals, alpha (α) particles show great promise owing to their relatively large size, delivered energy, finite pathlength, and resulting ionization density. This review discusses the therapeutic benefits of α-emitting radiopharmaceuticals and their pairing with appropriate diagnostics, resulting in innovative "theranostic" platforms. Herein, the current landscape of α particle-emitting radionuclides is described with an emphasis on their use in theranostic development for cancer treatment. Commonly studied radionuclides are introduced and recent efforts towards their production for research and clinical use are described. The growing popularity of these radionuclides is explained through summarizing the biological effects of α radiation on cancer cells, which include DNA damage, activation of discrete cell death programs, and downstream immune responses. Examples of efficient α-theranostic design are described with an emphasis on strategies that lead to cellular internalization and the targeting of proteins involved in therapeutic resistance. Historical barriers to the clinical deployment of α-theranostic radiopharmaceuticals are also discussed. Recent progress towards addressing these challenges is presented along with examples of incorporating α-particle therapy in pharmaceutical platforms that can be easily converted into diagnostic counterparts.
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Affiliation(s)
- Ryan P Coll
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, 1881 East Rd, Houston, TX, 77054, USA
| | - Scott J Bright
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd, Houston, TX, 77030, USA
| | - David K J Martinus
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd, Houston, TX, 77030, USA
| | - Dimitra K Georgiou
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, 1881 East Rd, Houston, TX, 77054, USA
| | - Gabriel O Sawakuchi
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd, Houston, TX, 77030, USA
| | - H Charles Manning
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, 1881 East Rd, Houston, TX, 77054, USA.
- Cyclotron Radiochemistry Facility, The University of Texas MD Anderson Cancer Center, 1881 East Rd, Houston, TX, 77054, USA.
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2
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Liu L, Maurice R, Galland N, Moisy P, Champion J, Montavon G. Pourbaix Diagram of Astatine Revisited: Experimental Investigations. Inorg Chem 2022; 61:13462-13470. [PMID: 35977097 DOI: 10.1021/acs.inorgchem.2c01918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Pourbaix diagram of an element displays its stable chemical forms with respect to the redox potential and pH of the solution, whose knowledge is fundamental for understanding and anticipating the chemistry of the element in a specified solution. Unlike most halogens, the Pourbaix diagram in the aqueous phase for astatine (At, Z = 85) is still under construction. In particular, the predominant domains of two astatine species assumed to exist under alkaline conditions, At- and AtO(OH)2-, need to be refined. Through high-performance ion-exchange chromatography, electromobility measurements, and competition experiments, the existence of At- and AtO(OH)2- has been confirmed and the associated standard potential has been determined for the first time (0.86 ± 0.05 V vs the standard hydrogen electrode). On the basis of these results, a revised version of astatine's Pourbaix diagram is proposed, covering the three oxidation states of astatine that exist in the thermodynamic stability range of water: At(-I), At(I), and At(III) (as At-, At+, AtO+, AtO(OH), and AtO(OH)2-).
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Affiliation(s)
- Lu Liu
- IMT Atlantique, Nantes Université, CNRS, SUBATECH, F-44000 Nantes, France
| | - Rémi Maurice
- IMT Atlantique, Nantes Université, CNRS, SUBATECH, F-44000 Nantes, France.,Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, 35000 Rennes, France
| | - Nicolas Galland
- Nantes Université, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
| | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, F-30207 Marcoule, France
| | - Julie Champion
- IMT Atlantique, Nantes Université, CNRS, SUBATECH, F-44000 Nantes, France
| | - Gilles Montavon
- IMT Atlantique, Nantes Université, CNRS, SUBATECH, F-44000 Nantes, France
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3
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Burns JD, Tereshatov EE, Zhang B, Tabacaru GC, McIntosh LA, Schultz SJ, McCann LA, Harvey BM, Hannaman A, Lofton KN, Sorensen MQ, Vonder Haar AL, Hall MB, Yennello SJ. Complexation of Astatine(III) with Ketones: Roles of NO 3– Counterion and Exploration of Possible Binding Modes. Inorg Chem 2022; 61:12087-12096. [DOI: 10.1021/acs.inorgchem.2c00085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jonathan D. Burns
- Department of Chemistry, University of Alabama at Birmingham, Birmingham, Alabama 35294, United States
| | - Evgeny E. Tereshatov
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
| | - Bowen Zhang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Gabriel C. Tabacaru
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
| | - Lauren A. McIntosh
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
| | - Steven J. Schultz
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Laura A. McCann
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Bryan M. Harvey
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
- Department of Physics, Texas A&M University, College Station, Texas 77843, United States
| | - Andrew Hannaman
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Kylie N. Lofton
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Maxwell Q. Sorensen
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Amy L. Vonder Haar
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
| | - Michael B. Hall
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Sherry J. Yennello
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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4
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Recent progress of astatine-211 in endoradiotherapy: Great advances from fundamental properties to targeted radiopharmaceuticals. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.03.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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5
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Separation, speciation, and mechanism of astatine and bismuth extraction from nitric acid into 1-octanol and methyl anthranilate. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120088] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Liu L, Rahali S, Maurice R, Gomez Pech C, Montavon G, Le Questel JY, Graton J, Champion J, Galland N. An expanded halogen bonding scale using astatine. Chem Sci 2021; 12:10855-10861. [PMID: 34447565 PMCID: PMC8372311 DOI: 10.1039/d1sc02133h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 07/12/2021] [Indexed: 01/07/2023] Open
Abstract
As a non-covalent interaction, halogen bonding is now acknowledged to be useful in all fields where the control of intermolecular recognition plays a pivotal role. Halogen-bond basicity scales allow quantification of the halogen bonding of referential donors with organic functional groups from a thermodynamic point of view. Herein we present the pK BAtI basicity scale to provide the community an overview of halogen-bond acceptor strength towards astatine, the most potent halogen-bond donor element. This experimental scale is erected on the basis of complexation constants measured between astatine monoiodide (AtI) and sixteen selected Lewis bases. It spans over 6 log units and culminates with a value of 5.69 ± 0.32 for N,N,N',N'-tetramethylthiourea. On this scale, the carbon π-bases are the weakest acceptors, the oxygen derivatives cover almost two-thirds of the scale, and sulphur bases exhibit the highest AtI basicity. Regarding the applications of 211At in targeted radionuclide therapy, stronger labelling of carrier agents could be envisaged on the basis of the pK BAtI scale.
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Affiliation(s)
- Lu Liu
- SUBATECH UMR 6457, CNRS, IMT Atlantique, Université de Nantes 4 Rue Alfred Kastler 44307 Nantes France
| | - Seyfeddine Rahali
- Université de Nantes, CNRS, CEISAM UMR 6230 44000 Nantes France
- Department of Chemistry, College of Science and Arts, Qassim University Ar Rass Saudi Arabia
| | - Rémi Maurice
- SUBATECH UMR 6457, CNRS, IMT Atlantique, Université de Nantes 4 Rue Alfred Kastler 44307 Nantes France
| | - Cecilia Gomez Pech
- SUBATECH UMR 6457, CNRS, IMT Atlantique, Université de Nantes 4 Rue Alfred Kastler 44307 Nantes France
- Université de Nantes, CNRS, CEISAM UMR 6230 44000 Nantes France
| | - Gilles Montavon
- SUBATECH UMR 6457, CNRS, IMT Atlantique, Université de Nantes 4 Rue Alfred Kastler 44307 Nantes France
| | | | - Jérôme Graton
- Université de Nantes, CNRS, CEISAM UMR 6230 44000 Nantes France
| | - Julie Champion
- SUBATECH UMR 6457, CNRS, IMT Atlantique, Université de Nantes 4 Rue Alfred Kastler 44307 Nantes France
| | - Nicolas Galland
- Université de Nantes, CNRS, CEISAM UMR 6230 44000 Nantes France
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7
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Guérard F, Maingueneau C, Liu L, Eychenne R, Gestin JF, Montavon G, Galland N. Advances in the Chemistry of Astatine and Implications for the Development of Radiopharmaceuticals. Acc Chem Res 2021; 54:3264-3275. [PMID: 34350753 DOI: 10.1021/acs.accounts.1c00327] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
ConspectusAstatine (At) is the rarest on Earth of all naturally occurring elements, situated below iodine in the periodic table. While only short-lived isotopes (t1/2 ≤ 8.1 h) are known, 211At is the object of growing attention due to its emission of high-energy alpha particles. Such radiation is highly efficient to eradicate disseminated tumors, provided that the radionuclide is attached to a cancer-targeting molecule. The interest in applications of 211At in nuclear medicine translates into the increasing number of cyclotrons able to produce it. Yet, many challenges related to the minute amounts of available astatine are to be overcome in order to characterize its physical and chemical properties. This point is of paramount importance to develop synthetic strategies and solve the labeling instability in current approaches that limits the use of 211At-labeled radiopharmaceuticals. Despite its discovery in the 1940s, only the past decade has seen a significant rise in the understanding of astatine's basic chemical and radiochemical properties, thanks to the development of new analytical and computational tools.In this Account, we give a concise summary of recent advances in the determination of the physicochemical properties of astatine, putting in perspective the duality of this element which exhibits the characteristics both of a halogen and of a metal. Striking features were evidenced in the recent determination of its Pourbaix diagram such as the identification of stable cationic species, At+ and AtO+, contrasting with other halogens. Like metals, these species were shown to form complexes with anionic ligands and to exhibit a particular affinity for organic species bearing soft donor atoms. On the other hand, astatine shares many characteristics with other halogen elements. For instance, the At- species exists in water, but with the least range of EH-pH stability in the halogen series. Astatine can form molecular interactions through halogen bonding, and it was only recently identified as the strongest halogen-bond donor. This ability is nonetheless affected by relativistic effects, which translate to other peculiarities for this heavy element. For instance, the spin-orbit coupling boosts astatine's propensity to form charge-shift bonds, catching up with the behavior of the lightest halogens (fluorine, chlorine).All these new data have an impact on the development of radiolabeling strategies to turn 211At into radiopharmaceuticals. Inspired by the chemistry of iodine, the chemical approaches have sparsely evolved over the past decades and have long been limited to electrophilic halodemetalation reactions to form astatoaryl compounds. Conversely, recent developments have favored the use of the more stable At- species including the aromatic nucleophilic substitution with diaryliodonium salts or the copper-catalyzed halodeboronation of arylboron precursors. However, it is clear that new bonding modalities are necessary to improve the in vivo stability of 211At-labeled aryl compounds. The tools and data gathered over the past decade will contribute to instigate original strategies for overcoming the challenges offered by this enigmatic element. Alternatives to the C-At bond such as the B-At and the metal-At bonds are typical examples of exciting new axes of research.
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Affiliation(s)
- François Guérard
- Université de Nantes, CNRS, Inserm, CRCINA, F-44000 Nantes, France
| | | | - Lu Liu
- IMT-Atlantique Bretagne-Pays de la Loire - Nantes Campus, SUBATECH, UMR CNRS 6457, F-44000 Nantes, France
| | - Romain Eychenne
- Université de Nantes, CNRS, Inserm, CRCINA, F-44000 Nantes, France
- Arronax GIP, F-44817 Saint-Herblain, France
| | | | - Gilles Montavon
- IMT-Atlantique Bretagne-Pays de la Loire - Nantes Campus, SUBATECH, UMR CNRS 6457, F-44000 Nantes, France
| | - Nicolas Galland
- Université de Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
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8
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de Macedo LGM, Neves ER, de Oliveira Só YA, Gargano R. Relativistic four-component potential energy curves for the lowest 23 covalent states of molecular astatine (At 2). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118869. [PMID: 32920438 DOI: 10.1016/j.saa.2020.118869] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/13/2020] [Accepted: 08/18/2020] [Indexed: 06/11/2023]
Abstract
The potential energy curves (PECs) of all covalent states of Molecular Astatine (At2) have been investigated in this work within a four-component relativistic framework using the MOLFDIR program package. The ground state was determined using multireference configuration interaction with all single and double excitations including Davidson size-extensivity correction (MRCISD+Q) whereas the 22 excited states were treated by complete open shell configuration interaction (COSCI). Spectroscopic constants (Re,ωe,ωexe,ωeye, De,Be,αe,βe,Te) are presented for all states as well as vertical excitations obtained at COSCI, MRCISD and MRCISD+Q levels. In addition, it is also presented accurate extended Rydberg analytical form for the ground state X: (1)0g+.
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Affiliation(s)
| | - Eric Rafael Neves
- Universidade Federal de São João del Rei, Campus Centro Oeste Dona Lindu (CCO/UFSJ) Divinópolis, MG, CEP 35501-296, Brazil
| | | | - Ricardo Gargano
- Instituto de Física, Universidade de Brasília (UnB), P.O. Box 04455, Brasília, DF 70919-970, Brazil
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9
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Bassal F, Champion J, Pardoue S, Seydou M, Sabatié-Gogova A, Deniaud D, Questel JYL, Montavon G, Galland N. Questioning the Affinity of Electrophilic Astatine for Sulfur-containing Compounds: Unexpected Bindings Revealed. Inorg Chem 2020; 59:13923-13932. [DOI: 10.1021/acs.inorgchem.0c01553] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fadel Bassal
- Université de Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
| | - Julie Champion
- IMT Atlantique, CNRS, SUBATECH UMR 6457, F-44307 Nantes, France
| | - Sylvain Pardoue
- Université de Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
- IMT Atlantique, CNRS, SUBATECH UMR 6457, F-44307 Nantes, France
| | - Mahamadou Seydou
- Université de Paris, CNRS, ITODYS UMR 7086, 15 rue J.A. de Baïf, F-75013 Paris, France
| | | | - David Deniaud
- Université de Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
| | | | - Gilles Montavon
- IMT Atlantique, CNRS, SUBATECH UMR 6457, F-44307 Nantes, France
| | - Nicolas Galland
- Université de Nantes, CNRS, CEISAM UMR 6230, F-44000 Nantes, France
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Preparation of no-carrier-added 211At solutions by a simple dry distillation method in the 209Bi(4He, 2n)211At reaction. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07308-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Leimbach D, Karls J, Guo Y, Ahmed R, Ballof J, Bengtsson L, Boix Pamies F, Borschevsky A, Chrysalidis K, Eliav E, Fedorov D, Fedosseev V, Forstner O, Galland N, Garcia Ruiz RF, Granados C, Heinke R, Johnston K, Koszorus A, Köster U, Kristiansson MK, Liu Y, Marsh B, Molkanov P, Pašteka LF, Ramos JP, Renault E, Reponen M, Ringvall-Moberg A, Rossel RE, Studer D, Vernon A, Warbinek J, Welander J, Wendt K, Wilkins S, Hanstorp D, Rothe S. The electron affinity of astatine. Nat Commun 2020; 11:3824. [PMID: 32733029 PMCID: PMC7393155 DOI: 10.1038/s41467-020-17599-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 07/08/2020] [Indexed: 01/08/2023] Open
Abstract
One of the most important properties influencing the chemical behavior of an element is the electron affinity (EA). Among the remaining elements with unknown EA is astatine, where one of its isotopes, 211At, is remarkably well suited for targeted radionuclide therapy of cancer. With the At- anion being involved in many aspects of current astatine labeling protocols, the knowledge of the electron affinity of this element is of prime importance. Here we report the measured value of the EA of astatine to be 2.41578(7) eV. This result is compared to state-of-the-art relativistic quantum mechanical calculations that incorporate both the Breit and the quantum electrodynamics (QED) corrections and the electron-electron correlation effects on the highest level that can be currently achieved for many-electron systems. The developed technique of laser-photodetachment spectroscopy of radioisotopes opens the path for future EA measurements of other radioelements such as polonium, and eventually super-heavy elements.
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Affiliation(s)
- David Leimbach
- CERN, Geneva, Switzerland.
- Department of Physics, University of Gothenburg, Gothenburg, Sweden.
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany.
| | - Julia Karls
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | - Yangyang Guo
- Van Swinderen Institute for Particle Physics and Gravity, University of Groningen, Groningen, The Netherlands
| | - Rizwan Ahmed
- National Centre for Physics (NCP), Islamabad, Pakistan
| | - Jochen Ballof
- CERN, Geneva, Switzerland
- Institut für Kernchemie, Johannes Gutenberg-Universität, Mainz, Germany
| | - Lars Bengtsson
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | | | - Anastasia Borschevsky
- Van Swinderen Institute for Particle Physics and Gravity, University of Groningen, Groningen, The Netherlands
| | - Katerina Chrysalidis
- CERN, Geneva, Switzerland
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - Ephraim Eliav
- School of Chemistry, Tel Aviv University, Tel Aviv, Israel
| | - Dmitry Fedorov
- Petersburg Nuclear Physics Institute - NRC KI, Gatchina, Russia
| | | | - Oliver Forstner
- Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, Jena, Germany
- Helmholtz-Institut Jena, Jena, Germany
| | | | | | | | - Reinhard Heinke
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | | | - Agota Koszorus
- KU Leuven, Instituut voor Kern- en Stralingsfysica, Leuven, B-3001, Belgium
| | | | | | - Yuan Liu
- Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | | | - Pavel Molkanov
- Petersburg Nuclear Physics Institute - NRC KI, Gatchina, Russia
| | - Lukáš F Pašteka
- Department of Physical and Theoretical Chemistry & Laboratory for Advanced Materials, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| | | | - Eric Renault
- CEISAM, Université de Nantes, CNRS, Nantes, France
| | - Mikael Reponen
- Department of Physics, University of Jyväskylä, Jyväskylä, Finland
| | - Annie Ringvall-Moberg
- CERN, Geneva, Switzerland
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | | | - Dominik Studer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - Adam Vernon
- School of Physics and Astronomy, The University of Manchester, Manchester, UK
| | - Jessica Warbinek
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - Jakob Welander
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
| | - Klaus Wendt
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | | | - Dag Hanstorp
- Department of Physics, University of Gothenburg, Gothenburg, Sweden
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12
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Woen DH, Eiroa-Lledo C, Akin AC, Anderson NH, Bennett KT, Birnbaum ER, Blake AV, Brugh M, Dalodière E, Dorman EF, Ferrier MG, Hamlin DK, Kozimor SA, Li Y, Lilley LM, Mocko V, Thiemann SL, Wilbur DS, White FD. A Solid-State Support for Separating Astatine-211 from Bismuth. Inorg Chem 2020; 59:6137-6146. [PMID: 32302134 DOI: 10.1021/acs.inorgchem.0c00221] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Increasing access to the short-lived α-emitting radionuclide astatine-211 (211At) has the potential to advance targeted α-therapeutic treatment of disease and to solve challenges facing the medical community. For example, there are numerous technical needs associated with advancing the use of 211At in targeted α-therapy, e.g., improving 211At chelates, developing more effective 211At targeting, and characterizing in vivo 211At behavior. There is an insufficient understanding of astatine chemistry to support these efforts. The chemistry of astatine is one of the least developed of all elements on the periodic table, owing to its limited supply and short half-life. Increasing access to 211At could help address these issues and advance understanding of 211At chemistry in general. We contribute here an extraction chromatographic processing method that simplifies 211At production in terms of purification. It utilizes the commercially available Pre-Filter resin to rapidly (<1.5 h) isolate 211At from irradiated bismuth targets (Bi decontamination factors ≥876 000), in reasonable yield (68-55%) and in a form that is compatible for subsequent in vivo study. We are excited about the potential of this procedure to address 211At supply and processing/purification problems.
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Affiliation(s)
- David H Woen
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | | | - Andrew C Akin
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | | | - Kevin T Bennett
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Eva R Birnbaum
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Anastasia V Blake
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Mark Brugh
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Elodie Dalodière
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Eric F Dorman
- Department of Radiation Oncology, University of Washington, Seattle, Washington 98195, United States
| | - Maryline G Ferrier
- Department of Radiation Oncology, University of Washington, Seattle, Washington 98195, United States
| | - Donald K Hamlin
- Department of Radiation Oncology, University of Washington, Seattle, Washington 98195, United States
| | - Stosh A Kozimor
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Yawen Li
- Department of Radiation Oncology, University of Washington, Seattle, Washington 98195, United States
| | - Laura M Lilley
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Veronika Mocko
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sara L Thiemann
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - D Scott Wilbur
- Department of Radiation Oncology, University of Washington, Seattle, Washington 98195, United States
| | - Frankie D White
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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13
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Liu L, Guo N, Champion J, Graton J, Montavon G, Galland N, Maurice R. Towards a Stronger Halogen Bond Involving Astatine: Unexpected Adduct with Bu 3 PO Stabilized by Hydrogen Bonding. Chemistry 2020; 26:3713-3717. [PMID: 31881101 DOI: 10.1002/chem.201905389] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Indexed: 11/10/2022]
Abstract
The halogen bond is a powerful tool for the molecular design and pushing the limits of its strength is of major interest. Bearing the most potent halogen-bond donor atom, astatine monoiodide (AtI) was recently successfully probed [Nat. Chem. 2018, 10, 428-434]. In this work, we continue the exploration of adducts between AtI and Lewis bases with the tributylphosphine oxide (Bu3 PO) ligand, revealing the unexpected experimental occurrence of two distinct chemical species with 1:1 and 2:1 stoichiometries. The 1:1 Bu3 PO⋅⋅⋅AtI complex is found to exhibit the strongest astatine-mediated halogen bond so far (with a formation constant of 10(4.24±0.35) ). Quantum chemical calculations unveil the intriguing nature of the 2:1 2Bu3 PO⋅⋅⋅AtI adduct, involving a halogen bond between AtI and one Bu3 PO molecular unit plus CH⋅⋅⋅O hydrogen bonds chelating the second Bu3 PO unit.
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Affiliation(s)
- Lu Liu
- SUBATECH, UMR CNRS 6457, IN2P3/IMT Atlantique/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307, Nantes Cedex 3, France
| | - Ning Guo
- SUBATECH, UMR CNRS 6457, IN2P3/IMT Atlantique/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307, Nantes Cedex 3, France
| | - Julie Champion
- SUBATECH, UMR CNRS 6457, IN2P3/IMT Atlantique/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307, Nantes Cedex 3, France
| | - Jérôme Graton
- CEISAM, UMR CNRS 6230, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322, Nantes Cedex 3, France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457, IN2P3/IMT Atlantique/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307, Nantes Cedex 3, France
| | - Nicolas Galland
- CEISAM, UMR CNRS 6230, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322, Nantes Cedex 3, France
| | - Rémi Maurice
- SUBATECH, UMR CNRS 6457, IN2P3/IMT Atlantique/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307, Nantes Cedex 3, France
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14
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Aneheim E, Palm S, Jensen H, Ekberg C, Albertsson P, Lindegren S. Towards elucidating the radiochemistry of astatine - Behavior in chloroform. Sci Rep 2019; 9:15900. [PMID: 31685874 PMCID: PMC6828679 DOI: 10.1038/s41598-019-52365-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/16/2019] [Indexed: 02/01/2023] Open
Abstract
Targeted alpha therapy of disseminated cancer is an emerging technique where astatine-211 is one of the most promising candidate nuclides. Although astatine has been known for over 70 years, its chemistry is still largely unexplored, mainly due to the lack of stable or long-lived isotopes. However, substantial amounts of astatine-211 can be produced in cyclotrons by the bombardment of natural bismuth. The astatine can be recovered from the resulting irradiated target material through either wet extraction or dry-distillation. Chloroform has become an important intermediate solvent for the recovery of astatine after production, especially following dry distillation. In this work, the radiochemistry of astatine in chloroform was investigated using evaporation, solvent extraction, chromatographic methods and molecular modeling. The extraction of astatine in chloroform led to the formation of multiple astatine species, allowing for evaporation of the solvent to dryness without any loss of activity. Radiolysis products of chloroform were shown to play an important role in the speciation of astatine forming both reactive and kinetically stable compounds. It was hypothesized that reactions with chlorine, as well as trichloromethyl hydroperoxide, forming polar astatine compounds are important reactions under the current experimental conditions.
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Affiliation(s)
- Emma Aneheim
- Department of Radiation Physics, Institute of Clinical Sciences, Sahlgrenska Academy,University of Gothenburg, SE41345, Gothenburg, Sweden. .,Region Västra Götaland, Sahlgrenska University Hospital, Department of Oncology, SE41345, Gothenburg, Sweden. .,Department of Energy and Materials - Nuclear Chemistry, Institute of Chemistry and Chemical Engineering, Chalmers University of Technology, SE41296, Gothenburg, Sweden.
| | - Stig Palm
- Department of Radiation Physics, Institute of Clinical Sciences, Sahlgrenska Academy,University of Gothenburg, SE41345, Gothenburg, Sweden
| | - Holger Jensen
- PET and Cyclotron Unit, Copenhagen University Hospital, KF3982, Copenhagen, Denmark
| | - Christian Ekberg
- Department of Energy and Materials - Nuclear Chemistry, Institute of Chemistry and Chemical Engineering, Chalmers University of Technology, SE41296, Gothenburg, Sweden
| | - Per Albertsson
- Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, SE41345, Gothenburg, Sweden.,Region Västra Götaland, Sahlgrenska University Hospital, Department of Oncology, SE41345, Gothenburg, Sweden
| | - Sture Lindegren
- Department of Radiation Physics, Institute of Clinical Sciences, Sahlgrenska Academy,University of Gothenburg, SE41345, Gothenburg, Sweden
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15
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Speciation of astatine reacted with oxidizing and reducing reagents by thin layer chromatography: formation of volatile astatine. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06900-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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Shee A, Saue T, Visscher L, Severo Pereira Gomes A. Equation-of-motion coupled-cluster theory based on the 4-component Dirac–Coulomb(–Gaunt) Hamiltonian. Energies for single electron detachment, attachment, and electronically excited states. J Chem Phys 2018; 149:174113. [DOI: 10.1063/1.5053846] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Avijit Shee
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, Michigan 48109-1055, USA
- Université de Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
| | - Trond Saue
- Laboratoire de Chimie et Physique Quantiques, UMR 5626 CNRS—Université Toulouse III–Paul Sabatier, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Lucas Visscher
- Division of Theoretical Chemistry, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - André Severo Pereira Gomes
- Université de Lille, CNRS, UMR 8523—PhLAM—Physique des Lasers, Atomes et Molécules, F-59000 Lille, France
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17
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Thin layer chromatography for astatine and iodine in solutions prepared by dry distillation. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6088-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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18
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Ikeda H, Hayashi Y, Takahashi N, Watabe T, Kanai Y, Shinohara A, Kato H, Watabe H, Shimosegawa E, Hatazawa J. Application of astatine-210: Evaluation of astatine distribution and effect of pre-injected iodide in whole body of normal rats. Appl Radiat Isot 2018; 139:251-255. [PMID: 29870920 DOI: 10.1016/j.apradiso.2018.05.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 04/23/2018] [Accepted: 05/22/2018] [Indexed: 12/16/2022]
Abstract
We proposed use of astatine-210 in preclinical study. Astatine-210 has higher yield of production and is easier to quantify than astatine-211. We produced astatine-210 with Bi target and 40 MeV alpha beam accelerated by cyclotron, free astatine-210 was separated and injected to normal rats. Three male rats (blocking group) were injected non-radioactive iodide before injection of astatine-210. Compared with the control group, the astatine-210 accumulations in the blocking group decreased to 24% in the thyroid.
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Affiliation(s)
- Hayato Ikeda
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshihiko Hayashi
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Naruto Takahashi
- Kyoto Prefectural University of Medicine, Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tadashi Watabe
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yasukazu Kanai
- Department of Molecular Imaging in Medicine, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Atsushi Shinohara
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Hiroki Kato
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Watabe
- Cyclotron and Radioisotope Center, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Eku Shimosegawa
- Department of Molecular Imaging in Medicine, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Jun Hatazawa
- Department of Nuclear Medicine and Tracer Kinetics, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka 565-0871, Japan; Immunology Frontier Research Center, Osaka University, 3-1 Yamadaoka, Suita, 565-0871 Osaka, Japan.
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19
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Guo N, Pottier F, Aupiais J, Alliot C, Montavon G, Champion J. Evidence for the Heaviest Expected Halide Species in Aqueous Solution, At–, by Electromobility Measurements. Inorg Chem 2018; 57:4926-4933. [DOI: 10.1021/acs.inorgchem.7b03003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ning Guo
- SUBATECH, UMR CNRS, 6457 IMT Atlantique/IN2P3/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307 Nantes Cedex 3, France
| | - Fabien Pottier
- SUBATECH, UMR CNRS, 6457 IMT Atlantique/IN2P3/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307 Nantes Cedex 3, France
| | | | - Cyrille Alliot
- GIP ARRONAX, 1 rue Aronnax, CS 10112, 44817 Saint-Herblain Cedex, France
- INSERM 892, CNRS 6299, CRCNA, 8 quai Moncousu, BP 70721, 44007 Nantes Cedex, France
| | - Gilles Montavon
- SUBATECH, UMR CNRS, 6457 IMT Atlantique/IN2P3/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307 Nantes Cedex 3, France
| | - Julie Champion
- SUBATECH, UMR CNRS, 6457 IMT Atlantique/IN2P3/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307 Nantes Cedex 3, France
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20
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Experimental and computational evidence of halogen bonds involving astatine. Nat Chem 2018; 10:428-434. [PMID: 29556053 DOI: 10.1038/s41557-018-0011-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 01/18/2018] [Indexed: 01/04/2023]
Abstract
The importance of halogen bonds-highly directional interactions between an electron-deficient σ-hole moiety in a halogenated compound and an acceptor such as a Lewis base-is being increasingly recognized in a wide variety of fields from biomedicinal chemistry to materials science. The heaviest halogens are known to form stronger halogen bonds, implying that if this trend continues down the periodic table, astatine should exhibit the highest halogen-bond donating ability. This may be mitigated, however, by the relativistic effects undergone by heavy elements, as illustrated by the metallic character of astatine. Here, the occurrence of halogen-bonding interactions involving astatine is experimentally evidenced. The complexation constants of astatine monoiodide with a series of organic ligands in cyclohexane solution were derived from distribution coefficient measurements and supported by relativistic quantum mechanical calculations. Taken together, the results show that astatine indeed behaves as a halogen-bond donor-a stronger one than iodine-owing to its much more electrophilic σ-hole.
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21
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Galland N, Montavon G, Le Questel JY, Graton J. Quantum calculations of At-mediated halogen bonds: on the influence of relativistic effects. NEW J CHEM 2018. [DOI: 10.1039/c8nj00484f] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
If astatine is generally a stronger halogen-bond donor than iodine, an inversion is sometimes observed owing to the spin–orbit coupling.
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Affiliation(s)
- N. Galland
- Laboratoire CEISAM
- UMR CNRS 6230
- Université de Nantes
- Nantes Cedex 3
- France
| | - G. Montavon
- Laboratoire SUBATECH
- UMR CNRS 6457
- IN2P3/EMN Nantes/Université de Nantes
- Nantes Cedex 3
- France
| | - J.-Y. Le Questel
- Laboratoire CEISAM
- UMR CNRS 6230
- Université de Nantes
- Nantes Cedex 3
- France
| | - J. Graton
- Laboratoire CEISAM
- UMR CNRS 6230
- Université de Nantes
- Nantes Cedex 3
- France
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22
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Maiti M, Lahiri S, Kumar D, Choudhury D. Separation of no-carrier-added astatine radionuclides from α-particle irradiated lead bismuth eutectic target: A classical method. Appl Radiat Isot 2017. [DOI: 10.1016/j.apradiso.2017.06.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Ekberg C, Jensen H, Mezyk SP, Mincher BJ, Skarnemark G. Extraction of 211At from nitric acid solutions into various organic solvents for use as an α-source for radiation chemistry studies. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5364-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Targeted radionuclide therapy with astatine-211: Oxidative dehalogenation of astatobenzoate conjugates. Sci Rep 2017; 7:2579. [PMID: 28566709 PMCID: PMC5451414 DOI: 10.1038/s41598-017-02614-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 04/13/2017] [Indexed: 11/09/2022] Open
Abstract
211At is a most promising radionuclide for targeted alpha therapy. However, its limited availability and poorly known basic chemistry hamper its use. Based on the analogy with iodine, labelling is performed via astatobenzoate conjugates, but in vivo deastatination occurs, particularly when the conjugates are internalized in cells. Actually, the chemical or biological mechanism responsible for deastatination is unknown. In this work, we show that the C−At “organometalloid” bond can be cleaved by oxidative dehalogenation induced by oxidants such as permanganates, peroxides or hydroxyl radicals. Quantum mechanical calculations demonstrate that astatobenzoates are more sensitive to oxidation than iodobenzoates, and the oxidative deastatination rate is estimated to be about 6 × 106 faster at 37 °C than the oxidative deiodination one. Therefore, we attribute the “internal” deastatination mechanism to oxidative dehalogenation in biological compartments, in particular lysosomes.
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25
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Ostrowski S, Majkowska-Pilip A, Bilewicz A, Dobrowolski JC. On Au nAt clusters as potential astatine carriers. RSC Adv 2017. [DOI: 10.1039/c7ra05224c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
To understand interactions between astatine atoms with gold clusters the AunAt and AunX clusters, n = 12 or 13, X = F, Cl, Br, and I, were calculated at the DFT level using basis sets with a quasi-relativistic pseudopotential.
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26
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Pozzi OR, Zalutsky MR. Radiopharmaceutical chemistry of targeted radiotherapeutics, part 4: Strategies for 211At labeling at high activities and radiation doses of 211At α-particles. Nucl Med Biol 2016; 46:43-49. [PMID: 28013121 DOI: 10.1016/j.nucmedbio.2016.11.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/11/2016] [Accepted: 11/28/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Alpha particles are radiation of high energy and short range, properties that can lead to radiolysis-mediated complications in labeling chemistry at the high radioactivity levels required for clinical application. In previous papers in this series, we have shown that radiation dose has a profound effect on the astatine species that are present in the labeling reaction and their suitability for the synthesis of N-succinimidyl 3-[211At]astatobenzoate. The purpose of this study was to evaluate the effects of adding N-chlorosuccinimide (NCS) to the methanol solution used for initial isolation of 211At after distillation, a process referred to as 211At stabilization, on 211At chemistry after exposure to high radiation doses. METHODS High performance liquid chromatography was used to evaluate the distribution of 211At species present in methanol in the 500-65,000Gy radiation dose range and the synthesis of SAB from N-succinimidyl 3-(tri-n-butylstannyl)benzoate in the 500-120,000Gy radiation dose range using different 211At timeactivity combinations under conditions with/without 211At stabilization. RESULTS In the absence of NCS stabilization, a reduced form of astatine, At(2), increased with increasing radiation dose, accounting for about half the total activity by about 15,000Gy, while with stabilization, At(2) accounted for <10% of 211At activity even at doses >60,000Gy. SAB yields without stabilization rapidly declined with increasing dose, falling to ~20% at about 5000Gy while with stabilization, yields >80% were obtained with 211At solutions stored for more than 23h and receiving radiation doses >100,000Gy. CONCLUSIONS Adding NCS to the methanol solution used for initial isolation of 211At is a promising strategy for countering the deleterious effects of radiolysis on 211At chemistry. ADVANCES IN KNOWLEDGE AND IMPLICATIONS FOR PATIENT CARE This strategy could facilitate the ability to perform 211At labeling at sites remote from its production and at the high activity levels required for clinical applications.
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Affiliation(s)
- Oscar R Pozzi
- Department of Radiology, Duke University Medical Center, Durham, NC, 27710, USA.
| | - Michael R Zalutsky
- Department of Radiology, Duke University Medical Center, Durham, NC, 27710, USA.
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27
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Guo N, Sergentu DC, Teze D, Champion J, Montavon G, Galland N, Maurice R. The Heaviest Possible Ternary Trihalogen Species, IAtBr−, Evidenced in Aqueous Solution: An Experimental Performance Driven by Computations. Angew Chem Int Ed Engl 2016; 55:15369-15372. [DOI: 10.1002/anie.201608746] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Ning Guo
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Dumitru-Claudiu Sergentu
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44302 Nantes Cedex 3 France
| | - David Teze
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Julie Champion
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Nicolas Galland
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44302 Nantes Cedex 3 France
| | - Rémi Maurice
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
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28
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Guo N, Sergentu DC, Teze D, Champion J, Montavon G, Galland N, Maurice R. The Heaviest Possible Ternary Trihalogen Species, IAtBr−, Evidenced in Aqueous Solution: An Experimental Performance Driven by Computations. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608746] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ning Guo
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Dumitru-Claudiu Sergentu
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44302 Nantes Cedex 3 France
| | - David Teze
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Julie Champion
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Nicolas Galland
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44302 Nantes Cedex 3 France
| | - Rémi Maurice
- SUBATECH, UMR CNRS 6457, IN2P3/Mines; Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
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29
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Sergentu DC, David G, Montavon G, Maurice R, Galland N. Scrutinizing "Invisible" astatine: A challenge for modern density functionals. J Comput Chem 2016; 37:1345-54. [PMID: 27059181 DOI: 10.1002/jcc.24326] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/18/2016] [Accepted: 01/19/2016] [Indexed: 12/20/2022]
Abstract
The main-group 6p elements did not receive much attention in the development of recent density functionals. In many cases it is still difficult to choose among the modern ones a relevant functional for various applications. Here, we illustrate the case of astatine species (At, Z = 85) and we report the first, and quite complete, benchmark study on several properties concerning such species. Insights on geometries, transition energies and thermodynamic properties of a set of 19 astatine species, for which reference experimental or theoretical data has been reported, are obtained with relativistic (two-component) density functional theory calculations. An extensive set of widely used functionals is employed. The hybrid meta-generalized gradient approximation (meta-GGA) PW6B95 functional is overall the best choice. It is worth noting that the range-separated HSE06 functional as well as the old and very popular B3LYP and PBE0 hybrid-GGAs appear to perform quite well too. Moreover, we found that astatine chemistry in solution can accurately be predicted using implicit solvent models, provided that specific parameters are used to build At cavities. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Dumitru-Claudiu Sergentu
- Laboratoire SUBATECH, UMR CNRS 6457, IN2P3/EMN Nantes/Université De Nantes, 4 Rue Alfred Kastler, BP 20722, Nantes Cedex 3, 44307, France.,Laboratoire CEISAM, UMR CNRS 6230, Université De Nantes, 2 Rue De La Houssinière, BP 92208, Nantes Cedex 3, 44322, France
| | - Grégoire David
- Laboratoire CEISAM, UMR CNRS 6230, Université De Nantes, 2 Rue De La Houssinière, BP 92208, Nantes Cedex 3, 44322, France
| | - Gilles Montavon
- Laboratoire SUBATECH, UMR CNRS 6457, IN2P3/EMN Nantes/Université De Nantes, 4 Rue Alfred Kastler, BP 20722, Nantes Cedex 3, 44307, France
| | - Rémi Maurice
- Laboratoire SUBATECH, UMR CNRS 6457, IN2P3/EMN Nantes/Université De Nantes, 4 Rue Alfred Kastler, BP 20722, Nantes Cedex 3, 44307, France
| | - Nicolas Galland
- Laboratoire CEISAM, UMR CNRS 6230, Université De Nantes, 2 Rue De La Houssinière, BP 92208, Nantes Cedex 3, 44322, France
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30
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(211)At-labeled agents for alpha-immunotherapy: On the in vivo stability of astatine-agent bonds. Eur J Med Chem 2016; 116:156-164. [PMID: 27061979 DOI: 10.1016/j.ejmech.2016.03.082] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/22/2016] [Accepted: 03/26/2016] [Indexed: 11/23/2022]
Abstract
The application of (211)At to targeted cancer therapy is currently hindered by the rapid deastatination that occurs in vivo. As the deastatination mechanism is unknown, we tackled this issue from the viewpoint of the intrinsic properties of At-involving chemical bonds. An apparent correlation has been evidenced between in vivo stability of (211)At-labeled compounds and the At-R (R = C, B) bond enthalpies obtained from relativistic quantum mechanical calculations. Furthermore, we highlight important differences in the nature of the At-C and At-B bonds of interest, e.g. the opposite signs of the effective astatine charges, which implies different stabilities with respect to the biological medium. Beyond their practical use for rationalizing the labeling protocols used for (211)At, the proposed computational approach can readily be used to investigate bioactive molecules labeled with other heavy radionuclides.
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Sergentu DC, Teze D, Sabatié-Gogova A, Alliot C, Guo N, Bassal F, Silva ID, Deniaud D, Maurice R, Champion J, Galland N, Montavon G. Advances on the Determination of the Astatine Pourbaix Diagram: Predomination of AtO(OH)2
−
over At−
in Basic Conditions. Chemistry 2016; 22:2964-71. [DOI: 10.1002/chem.201504403] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Dumitru-Claudiu Sergentu
- SUBATECH, UMR CNRS 6457; IN2P3/EMN Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - David Teze
- SUBATECH, UMR CNRS 6457; IN2P3/EMN Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Andréa Sabatié-Gogova
- SUBATECH, UMR CNRS 6457; IN2P3/EMN Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Cyrille Alliot
- GIP ARRONAUX; 1 rue Aronnax, CS 10112 44817 Saint-Herblain Cedex France
| | - Ning Guo
- SUBATECH, UMR CNRS 6457; IN2P3/EMN Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Fadel Bassal
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Isidro Da Silva
- CEMHTI, UPR CNRS 3079, Site Cyclotron CS30058; 3 A rue de la Férolerie 45071 Orléans Cedex 2 France
| | - David Deniaud
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Rémi Maurice
- SUBATECH, UMR CNRS 6457; IN2P3/EMN Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Julie Champion
- SUBATECH, UMR CNRS 6457; IN2P3/EMN Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
| | - Nicolas Galland
- CEISAM, UMR CNRS 6230; Université de Nantes; 2 rue de la Houssinière, BP 92208 44322 Nantes Cedex 3 France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457; IN2P3/EMN Nantes/Université de Nantes; 4 rue Alfred Kastler, BP 20722 44307 Nantes Cedex 3 France
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32
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Sergentu DC, Réal F, Montavon G, Galland N, Maurice R. Unraveling the hydration-induced ground-state change of AtO+ by relativistic and multiconfigurational wave-function-based methods. Phys Chem Chem Phys 2016; 18:32703-32712. [DOI: 10.1039/c6cp05028j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydration-induced ground-state change of AtO+ is confirmed by means of multiconfigurational wave-function-based calculations. The involved states are identified for the first time.
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Affiliation(s)
| | - Florent Réal
- PhLAM
- UMR CNRS 8523
- 59655 Villeneuve d'Ascq Cedex
- France
| | - Gilles Montavon
- SUBATECH
- UMR CNRS 6457
- IN2P3/EMN Nantes/Université de Nantes
- 44307 Nantes Cedex 3
- France
| | - Nicolas Galland
- CEISAM
- UMR CNRS 6230
- Université de Nantes
- 44322 Nantes Cedex 3
- France
| | - Rémi Maurice
- SUBATECH
- UMR CNRS 6457
- IN2P3/EMN Nantes/Université de Nantes
- 44307 Nantes Cedex 3
- France
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33
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Amaouch M, Montavon G, Galland N, Pilmé J. What can tell the quantum chemical topology on carbon–astatine bonds? Mol Phys 2015. [DOI: 10.1080/00268976.2015.1120361] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Mohamed Amaouch
- Sorbonne Universités, UPMC Université Paris 06, Laboratoire de Chimie Théorique, Paris, France
- CNRS UMR 7616, Laboratoire de Chimie Théorique, Paris, France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457, IN2P3/EMN Nantes/Université de Nantes, Nantes, France
| | | | - Julien Pilmé
- Sorbonne Universités, UPMC Université Paris 06, Laboratoire de Chimie Théorique, Paris, France
- CNRS UMR 7616, Laboratoire de Chimie Théorique, Paris, France
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Pruszyński M, Łyczko M, Bilewicz A, Zalutsky MR. Stability and in vivo behavior of Rh[16aneS4-diol]211 at complex: a potential precursor for astatine radiopharmaceuticals. Nucl Med Biol 2015; 42:439-445. [PMID: 25687450 PMCID: PMC4387111 DOI: 10.1016/j.nucmedbio.2014.12.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 11/25/2014] [Accepted: 12/16/2014] [Indexed: 12/18/2022]
Abstract
INTRODUCTION The heavy halogen (211)At is of great interest for targeted radiotherapy because it decays by the emission of short-range, high-energy α-particles. However, many astatine compounds that have been synthesized are unstable in vivo, providing motivation for seeking other (211)At labeling strategies. One relatively unexplored approach is to utilize prosthetic groups based on astatinated rhodium (III) complex stabilized with a tetrathioether macrocyclic ligand - Rh[16aneS(4)-diol](211)At. The purpose of the current study was to evaluate the in vitro and in vivo stability of this complex in comparison to its iodine analog - Rh[16aneS(4)-diol](131)I. METHODS Rh[16aneS(4)-diol](211)At and Rh[16aneS(4)-diol](131)I complexes were synthesized and purified by HPLC. The stability of both complexes was evaluated in vitro by incubation in phosphate-buffered saline (PBS) and human serum at different temperatures. The in vivo behavior of the two radiohalogenated complexes was assessed by a paired-label biodistribution study in normal Balb/c mice. RESULTS Both complexes were synthesized in high yield and purity. Almost no degradation was observed for Rh[16aneS(4)-diol](131)I in PBS over a 72 h incubation. The astatinated analog exhibited good stability in PBS over 14 h. A slow decline in the percentage of intact complex was observed for both tracers in human serum. In the biodistribution study, retention of (211)At in most tissues was higher than that of (131)I at all time points, especially in spleen and lungs. Renal clearance of Rh[16aneS(4)-diol](211)At and Rh[16aneS(4)-diol](131)I predominated, with 84.1 ± 2.3% and 94.6 ± 0.9% of injected dose excreted via the urine at 4 h. CONCLUSIONS The Rh[16aneS(4)-diol](211)At complex might be useful for constructing prosthetic groups for the astatination of biomolecules and further studies are planned to evaluate this possibility.
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Affiliation(s)
- Marek Pruszyński
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
| | - Monika Łyczko
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland
| | - Aleksander Bilewicz
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland
| | - Michael R Zalutsky
- Departments of Radiology and Radiation Oncology, Duke University Medical Center, Durham, NC, USA
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Maurice R, Réal F, Gomes ASP, Vallet V, Montavon G, Galland N. Effective bond orders from two-step spin–orbit coupling approaches: The I2, At2, IO+, and AtO+ case studies. J Chem Phys 2015; 142:094305. [DOI: 10.1063/1.4913738] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Rémi Maurice
- SUBATECH, CNRS UMR 6457, IN2P3/EMN Nantes/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307 Nantes Cedex 3, France
| | - Florent Réal
- Laboratoire PhLAM, CNRS UMR 8523, Université de Lille, 59655 Villeneuve d’Ascq Cedex, France
| | | | - Valérie Vallet
- Laboratoire PhLAM, CNRS UMR 8523, Université de Lille, 59655 Villeneuve d’Ascq Cedex, France
| | - Gilles Montavon
- SUBATECH, CNRS UMR 6457, IN2P3/EMN Nantes/Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44307 Nantes Cedex 3, France
| | - Nicolas Galland
- CEISAM, UMR CNRS 6230, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
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36
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Pilmé J, Renault E, Bassal F, Amaouch M, Montavon G, Galland N. QTAIM Analysis in the Context of Quasirelativistic Quantum Calculations. J Chem Theory Comput 2014; 10:4830-41. [PMID: 26584370 DOI: 10.1021/ct500762n] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Computational chemistry currently lacks ad hoc tools for probing the nature of chemical bonds in heavy and superheavy-atom systems where the consideration of spin-orbit coupling (SOC) effects is mandatory. We report an implementation of the Quantum Theory of Atoms-In-Molecules in the framework of two-component relativistic calculations. Used in conjunction with the topological analysis of the Electron Localization Function, we show for astatine (At) species that SOC significantly lowers At electronegativity and boosts its propensity to make charge-shift bonds. Relativistic spin-dependent effects are furthermore able to change some bonds from mainly covalent to charge-shift type. The implication of the disclosed features regarding the rationalization of the labeling protocols used in nuclear medicine for (211)At radioisotope nicely illustrates the potential of the introduced methodology for investigating the chemistry of (super)heavy elements.
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Affiliation(s)
- Julien Pilmé
- Laboratoire de Chimie Théorique, Sorbonne Universités, UPMC Université Paris 06, UMR 7616 , F-75005 Paris, France.,Laboratoire de Chimie Théorique, CNRS UMR 7616 , F-75005 Paris, France
| | - Eric Renault
- CEISAM, UMR CNRS 6230, Université de Nantes , 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Fadel Bassal
- CEISAM, UMR CNRS 6230, Université de Nantes , 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Mohamed Amaouch
- Laboratoire de Chimie Théorique, Sorbonne Universités, UPMC Université Paris 06, UMR 7616 , F-75005 Paris, France.,Laboratoire de Chimie Théorique, CNRS UMR 7616 , F-75005 Paris, France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457, IN2P3/EMN Nantes/Université de Nantes , 4 rue A. Kastler, BP 20722, 44307 Nantes Cedex 3, France
| | - Nicolas Galland
- CEISAM, UMR CNRS 6230, Université de Nantes , 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
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37
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Pereira Gomes AS, Réal F, Galland N, Angeli C, Cimiraglia R, Vallet V. Electronic structure investigation of the evanescent AtO+ion. Phys Chem Chem Phys 2014; 16:9238-48. [DOI: 10.1039/c3cp55294b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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38
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Measurement of the first ionization potential of astatine by laser ionization spectroscopy. Nat Commun 2013; 4:1835. [PMID: 23673620 PMCID: PMC3674244 DOI: 10.1038/ncomms2819] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 03/27/2013] [Indexed: 01/07/2023] Open
Abstract
The radioactive element astatine exists only in trace amounts in nature. Its properties can therefore only be explored by study of the minute quantities of artificially produced isotopes or by performing theoretical calculations. One of the most important properties influencing the chemical behaviour is the energy required to remove one electron from the valence shell, referred to as the ionization potential. Here we use laser spectroscopy to probe the optical spectrum of astatine near the ionization threshold. The observed series of Rydberg states enabled the first determination of the ionization potential of the astatine atom, 9.31751(8) eV. New ab initio calculations are performed to support the experimental result. The measured value serves as a benchmark for quantum chemistry calculations of the properties of astatine as well as for the theoretical prediction of the ionization potential of superheavy element 117, the heaviest homologue of astatine.
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39
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Rajerison H, Guérard F, Mougin-Degraef M, Bourgeois M, Da Silva I, Chérel M, Barbet J, Faivre-Chauvet A, Gestin JF. Radioiodinated and astatinated NHC rhodium complexes: synthesis. Nucl Med Biol 2013; 41 Suppl:e23-9. [PMID: 24661351 DOI: 10.1016/j.nucmedbio.2013.12.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 12/04/2013] [Accepted: 12/04/2013] [Indexed: 01/01/2023]
Abstract
INTRODUCTION The clinical development of radioimmunotherapy with astatine-211 is limited by the lack of a stable radiolabeling method for antibody fragments. An astatinated N-heterocyclic carbene (NHC) Rhodium complex was assessed for the improvement of radiolabeling methodologies with astatine. METHODS Wet harvested astatine-211 in diisopropyl ether was used. Astatine was first reduced with cysteine then was reacted with a chlorinated Rh-NHC precursor to allow the formation of the astatinated analogue. Reaction conditions have been optimized. Astatine and iodine reactivity were also compared. Serum stability of the astatinated complex has been evaluated. RESULTS Quantitative formation of astatide was observed when cysteine amounts higher than 46.2 nmol/μl of astatine solution were added. Nucleophilic substitution kinetics showed that high radiolabeling yields were obtained within 15 min at 60°C (88%) or within 5 min at 100°C (95%). Chromatographic characteristics of this new astatinated compound have been correlated with the cold iodinated analog ones. The radioiodinated complex was also synthesized from the same precursor (5 min. at 100°C, up to 85%) using [(125)I]NaI as a radiotracer. In vitro stability of the astatinated complex was controlled after 15 h incubation in human serum at 4°C and 37°C. No degradation was observed, indicating the good chemical and enzymatic stability. CONCLUSION The astatinated complex was obtained in good yield and exhibited good chemical and enzymatic stability. These preliminary results demonstrate the interest of this new radiolabeling methodology, and further functionalizations should open new possibilities in astatine chemistry. ADVANCES IN KNOWLEDGE AND IMPLICATIONS FOR PATIENT CARE Although there are many steps and pitfalls before clinical use for a new prosthetic group from the family of NHC complexes, this work may open a new path for astatine-211 targeting.
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Affiliation(s)
- Holisoa Rajerison
- Centre de Recherche en Cancérologie Nantes/Angers, 44007 Nantes Cedex 1, France.
| | - François Guérard
- Centre de Recherche en Cancérologie Nantes/Angers, 44007 Nantes Cedex 1, France
| | | | - Mickael Bourgeois
- Centre de Recherche en Cancérologie Nantes/Angers, 44007 Nantes Cedex 1, France; GIP ARRONAX, 44817 Saint-Herblain Cedex, France
| | | | - Michel Chérel
- Centre de Recherche en Cancérologie Nantes/Angers, 44007 Nantes Cedex 1, France
| | - Jacques Barbet
- Centre de Recherche en Cancérologie Nantes/Angers, 44007 Nantes Cedex 1, France; GIP ARRONAX, 44817 Saint-Herblain Cedex, France
| | | | - Jean-François Gestin
- Centre de Recherche en Cancérologie Nantes/Angers, 44007 Nantes Cedex 1, France.
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40
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Evaluation of a Wet Chemistry Method for Isolation of Cyclotron Produced [211At]Astatine. APPLIED SCIENCES-BASEL 2013. [DOI: 10.3390/app3030636] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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41
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Ayed T, Réal F, Montavon G, Galland N. Rationalization of the Solvation Effects on the AtO+ Ground-State Change. J Phys Chem B 2013; 117:10589-95. [DOI: 10.1021/jp406803e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tahra Ayed
- CEISAM, UMR CNRS
6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex
3, France
| | - Florent Réal
- PhLAM, UMR CNRS
8523, Université de Lille 1, Bât. P5, 59655 Villeneuve d’Ascq Cedex, France
| | - Gilles Montavon
- SUBATECH,
UMR
CNRS 6457, IN2P3/EMN Nantes/Université de Nantes, 4 rue A. Kastler, BP 20722, 44307 Nantes Cedex
3, France
| | - Nicolas Galland
- CEISAM, UMR CNRS
6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex
3, France
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42
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Ayed T, Seydou M, Réal F, Montavon G, Galland N. How Does the Solvation Unveil AtO+ Reactivity? J Phys Chem B 2013; 117:5206-11. [DOI: 10.1021/jp401759p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Tahra Ayed
- CEISAM, UMR CNRS 6230, Université de Nantes, 2 Rue de la Houssinière,
BP 92208, 44322 Nantes Cedex 3, France
| | - Mahamadou Seydou
- ITODYS, UMR CNRS 7086, Université Paris Diderot, 15 rue Jean Antoine
de Baı̈f, 75205 Paris Cedex 13, France
| | - Florent Réal
- PhLAM, UMR CNRS 8523, Université de Lille 1, Bât. P5, 59655
Villeneuve d’Ascq Cedex, France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457, IN2P3/EMN Nantes/Université de Nantes, 4 rue
A. Kastler, BP 20722, 44307 Nantes Cedex 3, France
| | - Nicolas Galland
- CEISAM, UMR CNRS 6230, Université de Nantes, 2 Rue de la Houssinière,
BP 92208, 44322 Nantes Cedex 3, France
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Champion J, Sabatié-Gogova A, Bassal F, Ayed T, Alliot C, Galland N, Montavon G. Investigation of Astatine(III) Hydrolyzed Species: Experiments and Relativistic Calculations. J Phys Chem A 2013; 117:1983-90. [DOI: 10.1021/jp3099413] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julie Champion
- SUBATECH, UMR CNRS 6457, IN2P3/Ecole des Mines de Nantes/LUNAM Université, 4 rue A. Kastler, 44307 Nantes Cedex,
France
| | - Andréa Sabatié-Gogova
- SUBATECH, UMR CNRS 6457, IN2P3/Ecole des Mines de Nantes/LUNAM Université, 4 rue A. Kastler, 44307 Nantes Cedex,
France
- CEISAM, UMR CNRS
6230, Université de Nantes, 2 rue
de la Houssinière,
44322 Nantes Cedex 3, France
| | - Fadel Bassal
- CEISAM, UMR CNRS
6230, Université de Nantes, 2 rue
de la Houssinière,
44322 Nantes Cedex 3, France
| | - Tahra Ayed
- CEISAM, UMR CNRS
6230, Université de Nantes, 2 rue
de la Houssinière,
44322 Nantes Cedex 3, France
| | - Cyrille Alliot
- GIP ARRONAX, 1 rue Aronnax, 44817 Saint
Herblain, France, and INSERM U892, IRTUN, 8 quai Moncousu, BP 70721 Saint Herblain,
France
| | - Nicolas Galland
- CEISAM, UMR CNRS
6230, Université de Nantes, 2 rue
de la Houssinière,
44322 Nantes Cedex 3, France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457, IN2P3/Ecole des Mines de Nantes/LUNAM Université, 4 rue A. Kastler, 44307 Nantes Cedex,
France
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Pilmé J, Renault E, Ayed T, Montavon G, Galland N. Introducing the ELF Topological Analysis in the Field of Quasirelativistic Quantum Calculations. J Chem Theory Comput 2012; 8:2985-90. [PMID: 26605711 DOI: 10.1021/ct300558k] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present an original formulation of the electron localization function (ELF) in the field of relativistic two-component DFT calculations. Using I2 and At2 species as a test set, we show that the ELF analysis is suitable to evaluate the spin-orbit effects on the electronic structure. Beyond these examples, this approach opens up new opportunities for the bonding analysis of large molecular systems involving heavy and superheavy elements.
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Affiliation(s)
- Julien Pilmé
- Laboratoire de Chimie Théorique, UMR 7616 CNRS, Université Pierre et Marie Curie, Sorbonne Universités, Case Courier 137, 4 place Jussieu, 75252 Paris Cedex 05, France
| | - Eric Renault
- CEISAM, UMR CNRS 6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Tahra Ayed
- CEISAM, UMR CNRS 6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Gilles Montavon
- SUBATECH, UMR CNRS 6457, IN2P3/EMN Nantes/Université de Nantes, 4 rue A. Kastler, BP 20722, 44307 Nantes Cedex 3, France
| | - Nicolas Galland
- CEISAM, UMR CNRS 6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
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Sabatié-Gogova A, Champion J, Huclier S, Michel N, Pottier F, Galland N, Asfari Z, Chérel M, Montavon G. Characterization of At− species in simple and biological media by high performance anion exchange chromatography coupled to gamma detector. Anal Chim Acta 2012; 721:182-8. [DOI: 10.1016/j.aca.2012.01.052] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 01/20/2012] [Accepted: 01/21/2012] [Indexed: 11/17/2022]
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46
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Recent developments in nuclear data measurements and chemical separation methods in accelerator production of astatine and technetium radionuclides. RADIOCHIM ACTA 2012. [DOI: 10.1524/ract.2011.1888] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
AbstractThe cyclotron produced neutron deficient technetium radionuclides (93Tc,94(m+g)Tc,95Tc,96Tc) have gained renewed interest in various fields, including nuclear imaging, provided they can be obtained in a pure form. Similarly,211At due to its moderate half-life and high intensityα-particle energy (both from211At as well as its transient decay product211Po) is of prime interest in targeted therapy. Another interest is to study the astatine chemistry, which is least studied compared to other halogens due to its non-occurrence in natural systems. For maximum production of these radionuclides various parameters need to be standardized. A chemical separation is required to achieve high radiochemical purity beforein-vivoapplication. This review describes various production routes of neutron deficient astatine and technetium radionuclides that have been reported after the year 2000. The analytical chemistry developed for separation of no-carrier-added (nca) Tc and At radionuclides in the same period is also discussed in detail.
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Zalutsky MR, Pruszynski M. Astatine-211: production and availability. Curr Radiopharm 2011; 4:177-85. [PMID: 22201707 PMCID: PMC3503149 DOI: 10.2174/1874471011104030177] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 02/08/2011] [Accepted: 02/08/2011] [Indexed: 11/22/2022]
Abstract
The 7.2-h half life radiohalogen (211)At offers many potential advantages for targeted α-particle therapy; however, its use for this purpose is constrained by its limited availability. Astatine-211 can be produced in reasonable yield from natural bismuth targets via the (209)Bi(α,2n)(211)At nuclear reaction utilizing straightforward methods. There is some debate as to the best incident α-particle energy for maximizing 211At production while minimizing production of (210)At, which is problematic because of its 138.4-day half life α-particle emitting daughter, (210)Po. The intrinsic cost for producing (211)At is reasonably modest and comparable to that of commercially available (123)I. The major impediment to (211)At availability is attributed to the need for a medium energy α-particle beam for its production. On the other hand, there are about 30 cyclotrons in the world that have the beam characteristics required for (211)At production.
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Affiliation(s)
- Michael R Zalutsky
- Department of Radiology, Duke University Medical Center, Durham, NC 27710 USA.
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Champion J, Seydou M, Sabatié-Gogova A, Renault E, Montavon G, Galland N. Assessment of an effective quasirelativistic methodology designed to study astatine chemistry in aqueous solution. Phys Chem Chem Phys 2011; 13:14984-92. [DOI: 10.1039/c1cp20512a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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